Sounds like those DL recipients are being pulled from the autocomplete list. Delete them when Outlook suggests them.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

wrote in message ups.com...
Recently after upgrading from Stand Alone w/s to Exchange connected
PCs. Users sometimes get an error when sending to distribution groups
in their Contacts folders. I find when adding the groups to the to:
line and trying to expand the group you get the error of "The Command
Selected Is Not Valid For Recipient" however if you go into the contact
list and right click and choose New Message to Contact it works fine.

Any ideas? All PC are using Outlook 2003 with the newest patches.